Item

N

(%)

Age (years), Mean ± standard deviation

48.29

± 15.86

Sex

Male

22

(49)

Female

23

(51)

Site of tumor

Colon

23

( 51)

Rectum

22

(49)

Pathology

Low risk pathology

29

(64)

High risk pathology

16

(36)

Grade of tumor

G1

7

(16)

G2

22

(49)

G3

16

(36)

Lymphovascular invasion

Negative

15

(33)

Positive

19

(42)

Not assessed

11

(24)

Tissue invasion

limited invasion

7

(15)

Marked invasion

38

(84)

Lymph node invasion

N0

13

(29)

N+

32

(71)

Distant metastasis

M0

22

(49)

M1

23

(51)

Stage

Early stage

12

(27)

Advanced stage

33

(34)

CEA at presentation

<5 ng/m

20

(44)

≥5 ng/m

25

(56)